but3-iac/terraform/modules/compute/main.tf

# À vous de créer :

# 1. Instance frontend :
#    - Image : debian-11
#    - Disque : 10GB
#    - IP publique
#    - Tags : frontend, ssh
#    - OS Login enabled

# 2. Instance backend :
#    - Image : debian-11
#    - Disque : 10GB
#    - Pas d'IP publique (interne seulement)
#    - Tags : backend, ssh
#    - OS Login enabled

# 3. Instance database :
#    - Image : debian-11
#    - Disque : 20GB
#    - Pas d'IP publique
#    - Tags : database, ssh
#    - OS Login enabled

resource "google_compute_instance" "vm_frontend" {
  name         = "vm-frontend"
  machine_type = var.instance_type
  zone         = var.zone

  boot_disk {
    initialize_params {
      image = "debian-cloud/debian-11"
      size  = 10
    }
  }

  network_interface {
    access_config {} # IP publique
    subnetwork = var.frontend_subnet_id
  }

  tags = ["frontend", "ssh"]

  metadata = {
    enable-oslogin = "TRUE"
  }
}

resource "google_compute_instance" "vm_backend" {
  name         = "vm-backend"
  machine_type = var.instance_type
  zone         = var.zone

  boot_disk {
    initialize_params {
      image = "debian-cloud/debian-11"
      size  = 10
    }
  }

  network_interface {
    subnetwork = var.backend_subnet_id
  }

  tags = ["backend", "ssh"]

  metadata = {
    enable-oslogin = "TRUE"
  }
}

resource "google_compute_instance" "vm_database" {
  name         = "vm-database"
  machine_type = var.instance_type
  zone         = var.zone

  boot_disk {
    initialize_params {
      image = "debian-cloud/debian-11"
      size  = 20
    }
  }

  network_interface {
    subnetwork = var.database_subnet_id
  }

  tags = ["database", "ssh"]

  metadata = {
    enable-oslogin = "TRUE"
  }
}